Saw-brace



(No Model.)

S. GAFP. SAW BBAGE.

No. 561,984. Patented June 16, 1896.

AN DREW E GRAHAM. PHOTOUTNQWASHINGTDK D C Fries.

; ATENT SAMUEL GAFF, OF GREENCASTLE, PENNSYLVANIA.

SAW-BRAC E.

SPECIFICATION forming part of Letters Patent No. 561,984, dated June 16,1896.

Application filed April3D,1896. semi No. 589,697. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL GAFF, a citizen of the United States,residing at Greencastle, in the county of Franklin and State ofPennsylvania, have invented a new and useful Saw-Brace, of which thefollowing is a specification.

This invention relates to new and useful improvements in saw-braces; andit has for its object to provide simple and efficient means for bracingthe frame of a bucksaw, whereby the blade thereof shall beheld firm andsecure therein, and also to construct the brace in such a manner as toimpart any desired degree of tension to the saw-blade in order that thelatter may perform its work to a better advantage.

To this end the invention consists substantially in the construction,combination, and arrangement of parts, as will be hereinafter fullyillustrated, described, and claimed.

In the accompanying drawings, Figure 1 is a perspective viewillustrating the brace in applied position. Fig. 2 is a top plan viewthereof. Fig. 3 is a side elevation of the brace removed from the sawand illustrated in unlocked position, a portion of the same being insection. Fig. 4 is a detail perspective view of the locking-lever. Fig.5 is a detail sectional View.

Similar numerals of reference indicate corresponding parts throughoutthe figures.

Referring to the drawings, 1 2 designate the rod-sections of asaw-brace, each of which has swiveled to one of its ends a securingloop3, adapted to engage the end bars of the saw-frame in order to apply thebrace thereto. The rod-section 1 has at the end opposite to thesecuring-loop 3 thereof a perforated lug 4L, and at the side of thesection opposite to said perforated lug 4 and parallel therewith is alug 5, provided with a U-shaped notch, said perforated lug havingpivoted to its inner side, by means of a rivet 6 or its equivalent, alocking-lever 7. The U -shaped notch in the lug 5 is designed for thepassage of the rivet 6 therethrough when attaching the lever 7 to thelug 4, and it will be readily seen that were not the lug 5 provided withthe said notch the operation of pivoting the locking-lever would berendered very difficult.

The locking-lever 7, adjacent to the pivot 6,

has an outwardly-extending stud 8, the latter being arranged at one sideof the longi tudinal center of the lever 7 and adapted to enter any oneof a series of openings 9, formed in the rod-section 2, whereby thebrace may be looked under any desired degree of tension.

It is to be noted that when the. brace is in locked position therod-section 2 and the locking-lever 7 lie against the rod-section 1 andbetween the lugs 4 and 5, the outwardlyextending stud 8 of the lever 7being immediately adjacent to one side of the lug 5. By reason of thelocking-lever 7 and the rod-section 2 assuming such a position when thebrace is locked it will be apparent that the stud is carried past thepivot 6 and beyond the direct line of tension, thereby preventing thelever 7 being drawn out of its locked position by the strain incident tothe bracing of the saw-frame, and also preventing any lateral movementof the section 2, which would displace the same from the stud S.

I From the foregoing it will be obvious that I have provided a bracewhich may be cheaply and easily constructed, and the operation of thesame will be readily understood by those skilled in the art. To applythe same, the brace is caused to assume a position similar to thatillustrated in Fig. 3, and the rod-section 2 is connected to thelocking-lever 7 by means of the outwardlyextending stud 8 passingthrough one of the openings 9, the opening receiving said stud beingdetermined by the degree of tension it is desired to impart to thesaw-frame. The securing-loops 3 are then placed over the ends of thesawframe and the locking-lever carried to a position similar to thatshown in Fig. 1, the outwardly-extending stud S passing behind the lug 5and beyond the direct line of tension, as described, thus preventingsaid lever being displaced and holding the brace securely upon thesaw-frame. To release the brace from the frame, it is simply necessaryto swing the locking-lever away from the rod-section 1, when the tensionwill be decreased and the loops 3 easily removed from the frame.

IVhile I have illustrated the brace as having the lever 7 arranged so asto swing upwardly when looking and unlocking the brace, it will beunderstood that the position of such lever may be reversed so as topermit the same swinging downwardly or, in any other position desired.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

A saw-brace, comprising rod-sections one of which is provided withparallel lugs, one of said lugs being perforated and the other lughaving a U-shaped notch, the other section having a series of openings,a locking lever pivoted to said perforated lug and provided with anoutwardly-extending stud arranged at one side of the longitudinal centerof said lever and adapted to engage one of

